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Q:

A galvanometer can be converted to a voltmeter by connecting

A) a high resistance in parallel B) a high resistance in series
C) a low resistance in series D) a low resistance in parallel
 
Answer & Explanation Answer: B) a high resistance in series

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Q:

Which of the following is not a vector quantity?

A) Acceleration B) Electric current
C) Force D) Velocity
 
Answer & Explanation Answer: B) Electric current

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Q:

As per Newton's law of gravitation, the force between two bodies is ________.

A) directly proportional to the product of their masses B) directly proportional to the distance between them
C) directly proportional to the product of their radius D) directly proportional to the product of forces
 
Answer & Explanation Answer: A) directly proportional to the product of their masses

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Q:

What is the SI unit of intensity of sound?

A) Decible B) Newton
C) Heartz D) Tesla
 
Answer & Explanation Answer: A) Decible

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Q:

According to the Second Law of Motion, for a given force, acceleration is inversely proportional to the ____ of an object.

A) density B) volume
C) force D) mass
 
Answer & Explanation Answer: D) mass

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Q:

Who discovered theory of relativity?

A) Isaac Newton B) Albert Einstein
C) Niel Bohr D) Michael Faraday
 
Answer & Explanation Answer: B) Albert Einstein

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1 1708
Q:

A covex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be :

A) f B) (4/3)f
C) (3/4)f D) (7/3)f
 
Answer & Explanation Answer: A) f

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Q:

Ozone protects biosphere from ___________

A) X ­- rays B) Gamma rays
C) Ultraviolet rays D) Infrared rays
 
Answer & Explanation Answer: C) Ultraviolet rays

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